Stemcell OS: Ubuntu¶
The base Ubuntu operating system is built from the cloudfoundry/bosh-linux-stemcell-builder repository.
The most recent versions of these distributions are built every two weeks to ensure the latest upstream patches are included. Critical and High CVEs result in new builds, regardless of the biweekly interval. These builds are published on bosh.io/stemcells as new, minor versions.
Ubuntu Xenial is the recommended Linux distribution for deploying with BOSH.
Ubuntu Xenial (16.04)¶
Ubuntu Trusty (14.04)¶
The Trusty (14.04) version is being deprecated. Maintenance updates will end by April 2019.
Kernel Livepatch Support¶
Ubuntu's Kernel Livepatch functionality is not supported in these distributions.
One of the priorities of BOSH is to ensure that software can be deployed in a highly reproducible, intentional manner. To ensure consistency across IaaSes (on-premise, public, private, internet-less) and across VMs within a cluster or deployment, we do not enable Livepatch. Typically, deployments and their releases are configured to support updates (such as stemcells) to be continuously deployed in a stable, reliable way without the need for Livepatch.